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| Relationship Between Differential Expression of Bax and Bcl-2 Genes and Developmental Differences of Porcine Parthenotes Cultured in PZM-3 and NCSU-23 |
| CUI Mao-sheng, LIU Zhen-xing, WANG Xian-long, ZHANG Jing, WU Yi, HAN Guo-cai , ZENG Shen-ming |
1.Laboratory of Animal Embryonic Biotechnology, College of Animal Science and Technology, China Agricultural University
2.Tianjin Institute of Animal Science |
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摘要 The developmental competence of porcine parthenotes cultured in porcine zygote medium-3 (PZM-3) and North Carolina State University-23 (NCSU-23) media was investigated. After in vitro maturation oocytes were electro-activated, and the subsequent developmental competence, rates of apoptotic, fragmented and arrested embryos from the two media were evaluated. Also, the ratio of mRNA expression of Bcl-2 and Bax gene was determined. Results demonstrated that cleavage, blastocyst, hatched blastocyst rates, and blastocyst cell numbers were significantly higher in PZM-3 than in NCSU-23. The rate of fragmented embryos in PZM-3 was lower than in NCSU-23 on d 1 and 3 (P<0.05) while the percentage of arrested embryo was lower in PZM-3 than in NCSU-23 on d 4 and 5 (P<0.05). TUNEL positive signals were higher in NCSU-23 than in PZM-3 from d 3 to 7 (P<0.05). The ratios of Bcl-2 and Bax mRNA expression in embryos were higher on d 5 than on d 3 and 1 in PZM-3 (P<0.05). In contrast, the ratios of Bcl-2 and Bax mRNA expression in embryos on d 1 were higher than on d 3 and 5 in NCSU-23 (P<0.05). Additionally, the ratios of Bcl-2 and Bax mRNA expression in embryos in PZM-3 were higher than in NCSU-23 on d 3 and 5 (P<0.05). In conclusion, lower apoptotic embryo rates and down-regulating Bax together with up-regulating expression of Bcl-2 transcripts may be responsible for the better developmental competence of porcine parthenotes in PZM-3.
Abstract The developmental competence of porcine parthenotes cultured in porcine zygote medium-3 (PZM-3) and North Carolina State University-23 (NCSU-23) media was investigated. After in vitro maturation oocytes were electro-activated, and the subsequent developmental competence, rates of apoptotic, fragmented and arrested embryos from the two media were evaluated. Also, the ratio of mRNA expression of Bcl-2 and Bax gene was determined. Results demonstrated that cleavage, blastocyst, hatched blastocyst rates, and blastocyst cell numbers were significantly higher in PZM-3 than in NCSU-23. The rate of fragmented embryos in PZM-3 was lower than in NCSU-23 on d 1 and 3 (P<0.05) while the percentage of arrested embryo was lower in PZM-3 than in NCSU-23 on d 4 and 5 (P<0.05). TUNEL positive signals were higher in NCSU-23 than in PZM-3 from d 3 to 7 (P<0.05). The ratios of Bcl-2 and Bax mRNA expression in embryos were higher on d 5 than on d 3 and 1 in PZM-3 (P<0.05). In contrast, the ratios of Bcl-2 and Bax mRNA expression in embryos on d 1 were higher than on d 3 and 5 in NCSU-23 (P<0.05). Additionally, the ratios of Bcl-2 and Bax mRNA expression in embryos in PZM-3 were higher than in NCSU-23 on d 3 and 5 (P<0.05). In conclusion, lower apoptotic embryo rates and down-regulating Bax together with up-regulating expression of Bcl-2 transcripts may be responsible for the better developmental competence of porcine parthenotes in PZM-3.
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Received: 08 October 2010
Accepted:
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| Fund: This research was funded by the National Natural Science Foundation of China (31072031) and the Key Research Program of Ministry of Education of China (109018). |
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Corresponding Authors:
Correspondence ZENG Shen-ming, Professor, Ph D, Tel/Fax: +86-10-62733744, E-mail: zengsm@cau.edu.cn; HAN Guo-cai, Associate Professor, Tel/Fax: +86-10-62733388, E-mail: hanguocai@263.net
E-mail: zengsm@cau.edu.cn
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| About author: CUI Mao-sheng, Ph D, E-mail: cuimaosheng@gmail.com; LIU Zhen-xing, Ph D, E-mail: sgliuzhenxing@163.com |
Cite this article:
CUI Mao-sheng, LIU Zhen-xing, WANG Xian-long, ZHANG Jing, WU Yi, HAN Guo-cai , ZENG Shen-ming .
2011.
Relationship Between Differential Expression of Bax and Bcl-2 Genes and Developmental Differences of Porcine Parthenotes Cultured in PZM-3 and NCSU-23 . Journal of Integrative Agriculture, 10(11): 1772-1780.
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